Switching to AndroidStudio folder/file layout.
Removing duplicate AAR jars from Proguard input.
Made AAR/APKLIBs libs\*.jars warning more prominent.
Removed IDE/compiler warnings.
Fixed checkstyle errors.
Resolves the duplicated resource file aar1JavaResource.txt when building the samples against 544d20d.
NB unless you also merge #435 you will only get as far as the next project that uses Proguard.
Only skip BuildConfig generation for dependencies of an AAR project.
This resolves issue #434.
Merge pull request #435 from william-ferguson-au/removing-duplicate-aar-jars

Removing duplicate aar jars for Proguard
Merge pull request #436 from william-ferguson-au/duplicated-resource-file

Resolves the duplicated resource file aar1JavaResource.txt when building the samples against 544d20d.
Merge pull request #438 from MartinMReed/missing-buildconfig

Resolves missing BuildConfig from APKLIB->APKLIB dependency
use the maven "project.build.directory" instead of hardcode "target"
Merge pull request #440 from carthx/issue-439

use the maven "project.build.directory" instead of hardcode "target"
Merge pull request #429 from greek1979/apklib-warning

Produce a warning for aar projects with apklib dependencies
reformatted log message and change to warn level, see pr 429
Merge pull request #416 from william-ferguson-au/issue-408

Switching to AndroidStudio folder/file layout.